H2 ARE THE EFFECTS OF USE INHERITED? 



of inherited injuries." 1 But Lucas was somewhat 

 credulous. One of his cases is that many girls 

 were born in London without mammae through the 

 injurious effect of certain corsets on the mothers. 

 He also gives a long account of a Jew who could 

 read through the thick covers of a book, and whose 

 son inherited this " hyperaesthcsia " of the sense 

 of sight in a still more remarkable degree (i. 

 113 119). Evidently Lucas's cases cannot be 

 accepted without some amount of reserve. 



The cases of the three calves which inherited 

 the one-horned condition of the cow, the two sons 

 who inherited a father's crooked finger, and the two 

 sons who were microphthalmic on the same side 

 as their father had lost an eye, may be due to 

 mere coincidence ; or an inherited constitutional 

 tendency or liability might lead to somewhat similar 



1 Traitt de I' Her edit e, ii. 489 ; Variation of Animals and Plants 

 under Domestication, i. 469. If injuries are inherited, why has the 

 repeated rupture of the hymen produced no inherited effect ? 



